DBS-C01 Workload-Specific Database Design Practice Question
Which TWO are valid considerations when designing a global database with Amazon Aurora Global Database? (Select TWO.)
⚠ Common exam trap
Candidates often assume secondary regions are read-only and cannot accept writes, but Aurora Global Database allows secondary regions to forward write operations to the primary, which is a key differentiator from traditional read replicas.
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Secondary regions can forward write operations to the primary region.
Amazon Aurora Global Database uses a primary-region architecture where secondary regions are fully readable and can forward write operations to the primary region. This is achieved through a dedicated replication channel that allows secondary clusters to accept write requests and asynchronously forward them to the primary, ensuring low-latency local writes while maintaining global consistency.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Secondary regions cannot have their own reader instances.
Why it's wrong here
Incorrect: Secondary regions can have reader instances.
- ✗
Failover requires promoting the secondary cluster to a standalone cluster.
Why it's wrong here
Incorrect: Failover can be managed by RDS; no need to promote to standalone.
- ✗
Cross-region replication latency is typically under 100 milliseconds.
Why it's wrong here
Incorrect: Latency is typically under 1 second, not 100 ms.
- ✓
Secondary regions can forward write operations to the primary region.
Why this is correct
Correct: Write forwarding is a feature of Aurora Global Database.
- ✓
Aurora Global Database supports up to 5 secondary AWS Regions.
Why this is correct
Correct: Maximum of 5 secondary regions.
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